Ok then... I've spent a few days reading and lurking, but I still haven't figured out why the "Cancel Actions" are not executed on installation cancel. Not when I cancel while copying files at any rate.

I hope this is the last thing I need.

Anyways I verified this by placing an app that just opens a window with a button to the cancell acions /Execute External Program/ but nothing appears. Any ideas on where I might have made a mistake?

This error of mine was solved by removing and re-adding cancel actions into "Setup Complete" section.

Now in case this is all I require I guess I have all I require for my setup. If it is so I'll start working on a step-by-step manual on how to create a setup that:1. Installs files2. Runs 2 programs /jars in my case/ after copying the files.3. Performs a rollback if anything went wrong.